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調整PDF尺寸

把每一頁調整為A4或Letter。

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支援格式: PDF
免費 · 無需註冊 · 大多數工具檔案不離開您的裝置
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使用方法

1

上傳

2

設定

3

下載

常見問題

Is 調整PDF尺寸 free?
Yes. 調整PDF尺寸 is completely free with no sign-up, no watermark and no daily limit. There is no paid tier — every tool on iAdorePDF is free to use as often as you like.
Is 調整PDF尺寸 safe and private?
Yes. 調整PDF尺寸 runs entirely inside your browser, so your file is never uploaded to any server. Nothing leaves your device, which makes it safe for confidential documents.
Do I need to install any software?
No. 調整PDF尺寸 works in any modern browser — Chrome, Safari, Firefox or Edge. There is nothing to download and no account to create.
Does 調整PDF尺寸 work on a phone?
Yes. 調整PDF尺寸 is built mobile-first and works on iPhone and Android exactly as it does on a computer, straight from the browser.
How do I use 調整PDF尺寸?
Open the page, drop your file into the upload box (or tap Select file), choose your options, then press the start button. Your result downloads straight to your device.
Is there a file size limit?
There is no server limit because the work happens on your own device. The practical ceiling is your device memory; files up to about 100 MB are comfortable on most phones and much larger on a computer.